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Property & Valuation

Assessed Value

Also known as: tax assessed value, assessment value, property assessment, tax assessment

The dollar value assigned to a property by a local tax assessor for the purpose of calculating property taxes, which may differ significantly from the property's fair market value or appraised value.

Assessed value is the dollar figure a county or municipal tax assessor assigns to a property as the basis for calculating annual property taxes. Local assessors use mass appraisal techniques — analyzing comparable sales, property characteristics, lot size, and location — to estimate value across thousands of parcels at once. In most jurisdictions, the assessed value is not intended to equal fair market value (FMV); instead, it represents a percentage of estimated market value determined by the state's assessment ratio. For mortgage note investors screening potential acquisitions, assessed value is a free, instantly available data point — but understanding its limitations is just as important as knowing the number itself.

How Assessed Value Is Determined

Tax assessors follow a process that differs from a private appraisal in several important ways:

  • Mass appraisal vs. individual inspection — Assessors value entire neighborhoods or districts at once using statistical models, not property-by-property inspections. This makes the process efficient but less precise for any single property.
  • Assessment ratios — Many states apply a ratio to the estimated market value. For example, if a state mandates a 50% assessment ratio and the estimated market value is $200,000, the assessed value will be $100,000. These ratios vary widely — some states assess at 100% of market value, others at 10% or less.
  • Reassessment cycles — Properties are reassessed on schedules that vary by jurisdiction: annually in some states, every 3 to 10 years in others. Between reassessments, values can drift far from current market conditions. A property assessed in 2019 may carry a stale number in 2026 if the jurisdiction has not reassessed.
  • Homestead and exemptions — Many states reduce the taxable portion of assessed value through homestead exemptions and other deductions. The gross assessed value and the taxable assessed value can be very different numbers.

Assessed Value vs. Other Valuation Metrics

Note investors encounter multiple property value figures during due diligence. Understanding how assessed value compares to other metrics prevents costly mistakes:

Valuation TypeSourceCostAccuracyBest Use
Assessed ValueCounty assessorFreeLow-moderateInitial screening, tax estimate
AVM (Automated Valuation Model)Algorithm-basedFree-lowModerateQuick desktop check
BPOLicensed real estate agent$50-150Moderate-highPool-level due diligence
Full AppraisalLicensed appraiser$300-600+HighFinal valuation, REO disposition

Assessed value should never be the sole basis for a pricing decision. However, it can serve as a useful cross-reference. If the assessed value is $120,000 and the BPO comes in at $60,000, that discrepancy warrants investigation — it could mean the assessor is behind the market, but it could also flag a BPO error. Conversely, if the assessed value and the BPO are reasonably aligned, that provides additional confidence.

Why Assessed Value Matters to Note Investors

Beyond rough property valuation, assessed value connects to several practical concerns:

  • Property tax estimation — The assessed value, multiplied by the local mill rate, determines the annual property tax bill. For note investors, delinquent property taxes are a critical due diligence item. Unpaid taxes can result in a tax lien that takes priority over the mortgage, threatening the note holder's collateral position. Knowing the assessed value helps estimate the annual tax burden and predict future escrow requirements.
  • LTV sanity check — Dividing the unpaid principal balance by the assessed value gives a rough loan-to-value ratio. It is not precise enough for pricing, but a UPB that far exceeds even the assessed value signals a deeply underwater loan that may warrant different resolution strategies.
  • Screening large pools — When reviewing a data tape with dozens or hundreds of loans, assessed value is often the only property value data available before ordering BPOs. Investors use it as a first-pass filter to identify loans where the collateral is likely sufficient to justify further diligence.

Practical Tips

Experienced note investors develop a few habits around assessed value. First, always check the assessment date — a value from five years ago in a declining market may significantly overstate current worth. Second, learn the assessment ratio for the state in question before comparing numbers across jurisdictions. A $50,000 assessed value in a state with a 100% ratio and a $50,000 assessed value in a state with a 25% ratio represent very different properties. Third, treat assessed value as a starting point, never an ending point. It costs nothing to look up, but it also costs nothing to be wrong about. Reliable pricing requires a BPO or appraisal — assessed value just helps you decide which loans are worth ordering one for.

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